Hi,
Thanks for reply.
I have added debug statement as follows
in system/memory/libmemunreachable/MemUnreachable.cpp. i giving "No. of
Frames:0". that's why backtrace call is not happening. How it is possible
if adb shell is giving memory leak address but backtrace frames are not
available?
*Debug tatement:-*
ssize_t num_backtrace_frames =
malloc_backtrace(reinterpret_cast<void*>(it.range.begin),
leak->backtrace.frames, leak->backtrace.max_frames);
MEM_ALOGI("No. of Frames: %zd",num_backtrace_frames);
if (num_backtrace_frames > 0) {
leak->backtrace.num_frames = num_backtrace_frames;
*adb shell output:*
Unreachable memory
704 bytes in 5 unreachable allocations
ABI: 'arm64'
288 bytes unreachable at 7862adf450
first 20 bytes of contents:
7862adf450: 88 13 e8 07 00 00 00 00 9e 9f 15 08 00 00 00 00
................
7862adf460: 2c bb 17 08 00 00 00 00 23 8a 89 08 00 00 00 00
,.......#.......
Thanks & Regards,
Shubham Salunkhe
On Wednesday, February 16, 2022 at 2:52:17 AM UTC+5:30 [email protected]
wrote:
> oh, and if you're on a recent AOSP build, you might want to try
> cherrypicking
> https://android-review.googlesource.com/c/platform/frameworks/base/+/1978990
> --- the `wrap.` system properties are a bit broken atm. (the wrap.sh stuff
> for apps works fine though.)
>
> On Tue, Feb 15, 2022 at 12:40 PM enh <[email protected]> wrote:
>
>> you did replace `[process]` with your actual process name, right?
>>
>> On Tue, Feb 15, 2022 at 12:29 PM SHUBHAM SALUNKHE <[email protected]>
>> wrote:
>>
>>> Hi All,
>>> I am trying to find memory leak using libmemunreachable library
>>> in AOSP. i have getting following output on adb shell, but not able to find
>>> line number of code where memory leak present or any backtrace logs in adb
>>> logs. following commands are executed as mentioned in link
>>> <https://android.googlesource.com/platform/system/memory/libmemunreachable/+/master/README.md#:~:text=libmemunreachable%20is%20a%20zero-overhead,differences%20to%20remove%20the%20overhead.>
>>> .
>>>
>>> *Commands:-*
>>> adb root
>>> adb shell setprop libc.debug.malloc.program app_process
>>> adb shell setprop wrap.[process] "\$\@"
>>> adb shell setprop libc.debug.malloc.options backtrace=4
>>> dumpsys -t 600 meminfo --unreachable [process].
>>>
>>> *adb shell output:-*
>>> Unreachable memory
>>> 704 bytes in 5 unreachable allocations
>>> ABI: 'arm64'
>>>
>>> 288 bytes unreachable at 7862adf450
>>> first 20 bytes of contents:
>>> 7862adf450: 88 13 e8 07 00 00 00 00 9e 9f 15 08 00 00 00 00
>>> ................
>>> 7862adf460: 2c bb 17 08 00 00 00 00 23 8a 89 08 00 00 00 00
>>> ,.......#.......
>>>
>>> No. of backtrace frames are 0 in debug logs. is there any way
>>> to enable backtrace in adb logs or to get line no. of source code from
>>> above adb shell output.
>>>
>>> Thanks & Regards,
>>> Shubham Salunkhe
>>>
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>>
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